CWT Weighing Equipment Operation & Calibration 3

Question 1

What does the term 'minimum load' (Min) mean on a legal-for-trade scale?

Accepted Answer

The lowest load at which the scale meets its accuracy requirements for commercial use

Answer

The minimum load is the lowest value at which the scale's indicated error is within the prescribed tolerance for trade use.

Question 2

Which test is specifically used to evaluate a scale's ability to return to zero after a load is removed?

Accepted Answer

Return-to-zero test

Answer

The return-to-zero test verifies that after removing a load the indicator returns to zero (or within tolerance), confirming proper mechanical and electronic reset.

Question 3

A weighmaster is using a counting scale with a reference weight of 100 pieces. If the average piece weight (APW) is entered incorrectly, what is the primary consequence?

Accepted Answer

All subsequent piece counts will be systematically incorrect

Answer

The counting scale derives counts by dividing total weight by the APW, so an incorrect APW causes every count result to be proportionally wrong.

Question 4

Which type of load cell is most commonly used in high-capacity truck scales?

Accepted Answer

Shear beam or compression load cell

Answer

Shear beam and compression-type load cells are preferred for truck scales because they handle very high loads and are robust against side forces and overloads.

Question 5

When a technician performs a 'shift test' on a floor scale, they are checking for:

Accepted Answer

The effect of off-center loading on the indicated weight

Answer

A shift (or corner load) test places a test weight at different positions on the platform to verify that off-center placement does not cause unacceptable errors.

(CWT) Certified Weighing Technician Practice Test

(CWT) Certified Weighing Technician Practice Test

CWT Weighing Equipment Operation & Calibration 3